Draft-rigging for railroad-cars



Nb. 608,522. I Patented Aug. 2, I898. DE WITT LOOMIS.

DRAFT RIGGING FOR RAILROAD CARS.

(Application filed Mar. 29, 1898.) I

2 Sheets$heet I.

(No Model.)

Hmrii fin I c "w nter: I Dell 1&5 Zoozzu'a Ma Wr No. 608,522. v PatentedAug. 2, I898,

m: WiTT Looms.

DRAFT RIGGING FOR RAILROAD CABS (Appfi on filed-KanQQ. 1898) N 0 M 0 d ea 4," b %/J" ////"1' H V/fl/i 1. IIZ u n f v 4V I 1 W1. m 2&1 WWW WW 4 WWI 0 u'.:;;:| B,

' Jag-0 awoe/wtoa/ auczu THE Noam PETERS ca. Movaumo in g those mostusually found in draft-riggin gs springs may be arranged tocome intooper- UNITED STATE PATENT FFICE.

DE WVITT LOOMIS, OF DETROIT, MICHIGAN.

'DRAFT-RIGG'IN'G FOR RAI LROAD=C ARS.

SPECIFICATION forming m of Letters Patent to. 608,522, dated August2,1898.

A lication filed March 29, 1898;

To all whom it mag concern:

Be it known that I, DE Wrrr LOOMIS, of Detroit, in the county of Wayneand State of Michigan, have invented certain new and useful Improvementsin Draft Rigging for Railroad-Oars; and I hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings,which form part of thisspecification.

This invention is an improvement in draftrigging for railroad-cars inwhich two or more ation either simultaneously or successively undereither or both thepulling and buffing strain. pr

The objectofmyinvention is to provide a double or tandemdraft-rigging ofsimple construction and of few parts in which any broken part can beeasily replaced and which can be easily and cheaply. applied to the formof draft-rigging now inuse by most railroads, most of the parts,including the springs, be-

commonly used to-da'y.

In the accompanying drawings, which form a part of this specification,and in whichsimilar letters indicate like'parts throughout the views,Figure 1 is a horizontal longitudinal section of a draft-riggingembodying my invention. Fig. 2 is a longitudinal vertical sectional Viewon the line 2 2 of Fig. 1. Fig. 3 is a transverse sectional view on theline 3 3, Fig. 1.. Fig. 4 is a plan view of one of the cast-ironfollower-guides. Fig. 5 is a top edge view thereof. Figs. 6 and 7 aretop and edge views of the bottom plate of said guide.

A A, Fig. 1, are the draw-bar timbers, to which are attached side platesor followerguides B 13, made of iron and firmly secured to the timbers Aby the bolts b. Each guideplate, as shown, is secured by six bolts, theholes for which are shown in Fig. 4 at b. The guide plates B are setinto recesses in the timbers A, as shown, butare provided with flanges Bat'each end,.which serve to preventthe timbers A A from breaking out atthe points where the guide-plates are let into them. The guide -plates,are also provided with vertical stops 0 c O O c C 0 as shown, and to thelower edge of each guide-plate is attacheda bar 13 by bolts b upon whichbar Serial ITo 675,630. (No model.)

the followers D D D D hereinafter described, rest. Bar 13 holds thetimbers together and prevents their'spreading apart.

The follower D is placed between stops 0 c and limited in its movementsthereby. Follower D is placed between'stops 0 O Follower D is placedbetween stops C 0 and follower D between stops 0 c A yoke or strap E issolidly and firmly affixedto the end of the draw-bar F by the bolts f orin other convenient manner, and said yoke can be madeof 'one piece, asshown in the drawings, orin other desired manner, its exact constructionnot being essential. This yoke, resting on bar B extends between theguide-plates B B and surrounds all the followers D D D D resting uponbars B said followers being held'in their normal position, respectively,against the stops 0' O C O by the pressure of coil-springs interposedbe- "tween'followers D D. D D as shown.

A rod G of a length which approximates closely to the distance betweenthe end of the draw-bar F. and the :insideend of the yoke E passesthrough all of said followers and springs supporting the latter and isprovided with a collar or. keys at or near its center between followersD D The 'coil s'prings may be of any suitable desired construction, and,as shown, two springs H h, one inside of the other, are interposedbetween followers D D, and two similar springs H h are placed betweenfollowers D D all said springs being strung upon and held in position byrod G.

the end of the rod G, which .by reason of its collar or key G acts uponthe follower D and compresses springs 11 h against the follower D whichis held by the stop 0 In the pulling strain the action is reversed. Theinner end of the yoke E strikes against the follower D and compresses-springs H h against the follower-plate D held by stop 0 At the sametime the end of the yoke strikes the too rear end of the rod G, which byits collar or key G acts upon the follower D and compresses springs IIIt against the follower D, which is held in position by the stop C.

By shortening the rear end of rod G, which passes through followerD thepairs of springs H 7L and II 71. will be compressed successively insteadof simultaneously on the pulling strain, or this same object may beaccomplished by slightly lengthening the rod and yoke, so that the rodprojects normally through and beyond the follower D and therefore theend of the yoke will strike the end of the rod in the last instancebefore striking the follower D and thereby cause the compression ofsprings II It before the compression of springs II h. In the firstinstance the end of the yoke E strikes the follower D before strikingthe pin, thus compressing springs II It before compressing springs II71/. The stops 0 c, &c., may be so placed that the followers will bestopped by them before the springs are compressed solid, if desired. Insome instances instead of making rod G continuous it might be made intwo pieces, the inner ends of such pieces meeting between the followersD D Such an obvious modification will operate exactly like theconstruction shown in Fig. 1.

In some instances it maybe desirable to so arrange the parts as to usebut a single spring or compound spring in drawing or pulling the ear andto use both springs in buffing. This can be accomplished very readily byremoving that portion of the rod G in Fig. 1 which passes through thefollowers I) D, so only one spring will be brought into operation on thepulling strain,while both springs will be brought into operation at thesame time on the buffing strain. Fig. 11 shows such a modification of myinvention effected by substituting a short rod G for red G, Fig. 1, orby removing rod 1, Fig. 8. In this case the followers I) D D might bemade impcrforate and the rod G be passed through the springs II 72, andthrough an opening in the follower I). On the draft strain springs II Itonly will be compressed and on the buffing strain both sets of springswill be compressed, the rod G striking follower I) and compressingsprings II It and follower D compressing springs II h. It is obviousthat the same effect would be realized if the rod G passed through thefollower I) and struck against the end of the draw-bar, as in Fig. S.

Having thus described myinvention, what I therefore claim as new, anddesire to secure by Letters Patent thereon, is

1. In combination with a draw-bar and yoke and four follower-plates andtwo groups of springs; a rod having an enlarged portion; the enlargedportion being located between the two middle follower-plates and thesmaller portions thereof extending therefrom and transfixing thefollower-plates and springs, said rod being disconnected from both thedraw-bar and yoke, substantially as and for the purpose described.

2. The combination in a draft-rigging, of the opposite guide-plates withfour followers supported thereon, said plates being provided with stopsto limit the movement of each follower; the springs interposed betweenthe first and second and third and fourth followers, and a rod arrangedcentrally of the springs and transfixing the followers, said rod beingdisconnected from both the drawbar and yoke; with the draw-bar and theyoke attached to said draw-bar and loosely inclosing all the followers,springs and rod, substantially as and for the purpose described.

33. In a draft-rigging for cars, the combination of the guide-platesprovided with a series of stops, the movable followers supported by theguide-plates and each arranged between the proper stops, the sets ofsprings interposed between the first and second, the third and fourthfollowers; and a rod transfixing the followers and upon which thesprings are supported, said rod having a collar intermediate the secondand third followers; with a draw-bar and a yoke attached theretosurrounding the followers, springs and rod, said rod being disconnectedfrom both the drawbar and yoke, substantially as described.

In a draft-rigging for cars, the combination of the timbers, theopposite guide-plates I let therein and provided with verticallydisposedstops C c, 0 C O, 0 and the followers l), I), D I), arranged betweensaid stops, substantially as described; and the rod loosely transfixingall said followers and having a central collar or pin between thefollowers D, D with the draw-bar, and the yoke E attached theretosurrounding said followers, springs and rod, said rod being disconnectedfrom both draw-bar and yoke, substantially as described.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

DE \VITT LOOMIS.

Witnesses:

.IonN Tarpon NicnoLs, XVTLLTAM Soorr.

